public class Application {
    public static void main(String args[]) {
        MobileTelephone telephone = new MobileTelephone ();
        SIM sim=new SIMOfChinaMobile();
        sim.setNumber("13887656432");
        telephone.useSIM(sim);
        telephone.showMess();
        sim=new SIMOfChinaUnicom();
        sim.setNumber("13097656437");
        telephone.useSIM(sim);
        telephone.showMess();
    }
}
